CLASS -VIII SEC- G ROLL NO- 09 ADMN NO- 258-2018/19 Subject- computer Name-Aditya raj School- DELHI PUBLIC SCHOOL GAYA
Network topology refers to layout which various components of a network, like nodes , links peripherals etc. Topology can either be physical or logical . physical topology is the physical layout of nodes, workstation , and cables in the network, whereas logical topology is the way how the information flows between different components . NETWORK TOPOLOGIES Network topologies are categorized into the following basic types: POINT-TO-POINT Point-to-point topology is the simplest form of network structure in which two nodes are directly connected with each other. This type of network is suitable for small areas where computer is close to each other. this topology provides us faster and reliable connection.
BUS TOPOLOGY This topology is for single communication line or one main cable to which all nodes are directly connected. The main cable acts as a backbone for the network.it transmits data in only one direction. In this type of network topology one of the computers in the network acts as the computer server, that provides data to all the clients. This topology is used in small network where cable requirement is relatively small. Star Topology: A star topology consists of a central node, such as a hub or a switch, to which all devices are directly connected. Each device has its own connection to the central node, forming a star-like structure. It offers easy troubleshooting and scalability, as adding or removing devices does not affect the rest of the network. However, if the central node fails, the network becomes inoperable.
Mesh Topology: In a mesh topology, every device is connected to every other device, creating a fully interconnected network. Mesh topologies can be either full mesh (every device connected to every other device) or partial mesh (only selected devices have direct connections). Mesh topologies offer high redundancy and fault tolerance, but they can be complex to implement and require a large number of connections. Tree Topology: Also known as a hierarchical topology, the tree topology combines multiple star topologies in a hierarchical structure. Devices are arranged in levels, with a central node connecting to multiple intermediate nodes, which further connect to end devices. It offers scalability and allows for easy expansion, but if the central or intermediate nodes fail, the connected devices become inaccessible.
Ring Topology: In a ring topology, devices are connected in a closed loop, where each device is connected to exactly two neighboring devices. Data travels in one direction around the ring, and each device regenerates and passes on the signal. It is a simple design, but a single device or cable failure can disrupt the entire network.